Timelapse video of space

If you look at around 2:45 You seen a laser fly out towards the sky, is this the secret death star project we're not supposed to know about?
 
Amazing Vid. I assume the fast flashes across the sky are asteroids and the slower ones are satellites.

The laser ? I think it has something to do with tracking and measuring atmospheric distortion, essentials when doing long exposures. I think. Im not an expert.
 
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